1 October 1991 Plasma interaction with powerful laser beams
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Experimental results obtained in different conditions of interaction are reported. Several instabilities have been investigated including filamentation, stimulated Brillouin and Raman scattering, two plasmon decay, harmonic generation, self-phase modulation, and hot electron acceleration. Threshold and saturation levels of some of those processes have been measured. Time-resolved spectroscopy gave detailed information on the physics involved. The effect of several beam-smoothing techniques has been tested. Particularly, random phasing and induced spatial incoherence, when properly matched with focusing optics, showed reduction or suppression of most of the above mentioned instabilities.
© (1991) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Antonio Giulietti, Antonio Giulietti, Danilo Giulietti, Danilo Giulietti, Oswald Willi, Oswald Willi, } "Plasma interaction with powerful laser beams", Proc. SPIE 1502, Industrial and Scientific Uses of High-Power Lasers, (1 October 1991); doi: 10.1117/12.46901; https://doi.org/10.1117/12.46901

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